Called when the System.Web.UI.IHierarchicalDataSource instance that the data-bound control works with raises the System.Web.UI.IDataSource.DataSourceChanged event.
- sender
- The source of the event, the System.Web.UI.IHierarchicalDataSource object.
- e
- An EventArgs object that contains event data.
The System.Web.UI.WebControls.HierarchicalDataBoundControl class handles the System.Web.UI.IHierarchicalDataSource.DataSourceChanged event to set the BaseDataBoundControl.RequiresDataBinding property to true.